Air circulating device



A. E. GUTH AIR' CIRCULATING DEVICE Feb. 20, 1940. 2,190,945

Filed Jan.. 5l, 1939 4% 1f i l 553 VII;

. Patented Feb. 20,1940

UNITED STATES PATENT OFFICE 2,190,945 AIR CIBCULATING DEVICE Arthur E.Guth, Bang r, Maine y Application January 31, 1939, .Serial No. 253,909y 6 Claims.

The invention aims to provide a new and improved device for circulatingthe air in bedrooms and various other rooms, in such-manner that summerair may be conditioned for complete comfort, Without draft.

With the foregoing in view, the invention resides in the novel subjectmatter hereinafter described and claimed, description being accomplishedby reference to the accompanying drawing.

Figure 1 is a vertical sectional view through a portion of a roomshowing `the invention supported in an operative position therein.

Figure 2 is a horizontal sectional view on linel2--2 of Fig. 1.

Figure 3- is a longitudinal section partly in elevation. Y

Figure 4 isv a disassembled perspective view showing the supportingbracket.

The drawing above briefly described illustrates a preferred form ofconstruction and while that construction will be rather specificallyexplained, it is to be understood tha-t within the scope of theinvention `as claimed, variations may be made.

I have shown a plate I0 .for attachment to a wall or `a window frame andforming part of a bracket for supporting the device in an operativeposition. One side of the plate IIJ `is provided with convergingundercut anges' II which detachably hold a tapered block I2 against saidplate, a horizontal arm I3 being hingedat I4 to said block forhorizontal swinging to any desired position. The free end ofthe arm I3is provided with a vertical bearing I5. This bearing receives a shortstub shaft I5.' which projects downwardly from the bottom I6 of ahorizontal sleeve I1. Within this sleeve is a horizontal driving motorI8 for a rotary fan I9, said motor o having a supporting pedestal 29.This pedestal is provided with a ange 2| resting on the bottom I6 of thesleeve I1, and the stub shaft I5 is provided with a similar ange 22contacting with the 'lower side of said bottom. Rivets or otherfasteners 23 pass through the two anges 21 and 22 and through thebottom-I6 to secure all of these parts in lxecl relation with eachother.

The sleeve I1 is of cylindrical form andv its outlet end 24 is cut in aninclined plane which intersects the plane of rotation .of the'fan I9,said end 24 being so related with said fan that the upper portion 26.0fthe sleeve I1 overlies land extends beyond the fan but the lower portionI6 of said'sleeve does not underlie said fan,

(Cl. 23o-120) leaving the lower portion of the latter always operatingin the free air in front of the sleeve. By this arrangement, the airleaving the upper portion of the sleeve I1 will be horizontally directedwhereas that leaving the lower portion ofv 5 said sleeve will' bedirected outwardly and upwardly. The proportion of horizontally and up-ewardly moving air currents may be varied by adjusting the fan I9longitudinally of the sleeve I1, for which purpose the fan hub 21 isadjust- 10 ably mounted at '28 on the motor shaft 29. The nearer the fanI9 is to the lower front portion of vthe sleeve I1, the less upward aircurrent, and vice versa.

The inclined outlet end 24 of the sleeve I1 is 1B preferably cut at asixty degree angle to the axis of said sleeve. Preferably the inlet end30 of this sleeve is also cut in an inclined plane parallel with theoutlet end 24, andby so doing, less resistance is offered to the airentering the sleeve, 20 and noise is reduced.. The rear edge of -thesleeve is preferably rounded as shown at 3| and the rear portion of saidsleeve may well be lined at 3 2 with the so-called wallie felt to stillfurther reduce noise. The rear end of the fan motor I3 25 is preferablyprovided with a slotted cone 33 to direct the air properly around saidmotor and still further reduce noise. A suitable guard 34 is preferablycarried by the front end of the sleeve I1, below and in front of the fanI9. 30

Obviously, an appropriate time switch and rheostat can be used toprovide automatic regulation of rimning time and speed, and as suchequipment is well known and forms no part of the present invention, ithas `not been illustrated. 35

"InV Figs. 1 and 2, I have shown the device mounted on the upper cornerportion of a window frame 35, nearthe ceiling 36 of a room, the devicebeing preferably six feet or more above the floor 31. With the bracketarm I3 swung to the 40 proper position, the sleeve I1 and associatedparts are positioned to direct the air currents' not only upwardly butobliquely against onewall 38 of the room, the result being that thesecurrents will be deflected diagonallyfrom this wall to the next 45 andso on, as illustrated by the arrows in Fig. 2. With the fan operating,the upper window sash 39 lowered slightly and the lower sash 49 some-.what raised, a continuous circulation `of air in the entire room iseffected without drafts, the 5o circulation being so efficient that aperson may sleep under bed clothes even in the hottest summer weather.By maldng use of a suitable time switch and rheostat, the device may beoperated at desired speed and cut of! about the time when 55 the roomshould be cooled to a comfortable extent. Moreover, by'using therheostat to control the speed of the fan, substantially silent operationmay be attained which will not interfere with sleeping. Y

As excellent results may be Obtained from the general construction shownand described, it is zontal sleeve open at both ends, and

preferably followed. However, within the scope oi.' the invention as'claimed, variations maybe made.

l. An air circulating device comp a horizontal sleeve open at both ends,.and a rotary fan mounted in said sleeve vnear its outlet end forrotation in a vertical plane to create a current of air longitudinallythrough said sleeve, the outlet end of said sleeve being,r so shapedthat it overlies said ian but does not underlie the same. whereby theair leaving the upper portion of the sleeve will be directedhorizontally and the air vleaving the lower portion ofsald sleeve willbe directed upwardly.

2; An air circulating device comprising a horia rotary tan mounted insaid sleeve near its outlet end for rotation in a vertical plane tocreate a current oi air lonaitudinally through said sleeve, the outletend oi said sleeve being cut in an inclined plane which intersects theplane or rotation of said 1an, said inclined sleeve end being so relatedwith said ian that the upper portion of the sleeve 4 overlies said fanand the lower portion oi' said sleeve does not underlie said fan.

3. A structure as speciiied in claim 1; togethe with means for adjustingsaid fan longitudinally of said sleeve to vary the proportion ofhorizonl tally and upwardly moving air.

' 4. A structure as speciiied in claim 2 together 'with means foradjusting said fan longitudinally of said sleeve to vary the proportionoi horizontally and upwardly moving air.

5. A structure as specified in claim 2; the inlet end of said sleevebeing also cut in an inclined plane which is substantially parallellwith the plane in whlchsaid outlet end is out.

l6. A structure as speciiled in claim 2; the inlet e end of said sleevebeing also cut in an inclined plane which is substantially parallel withthe plane in which said outlet end is cut, said inlet end being providedwith a yieldable lining which muiiies the sound oi' the ingoing air.

ARTHUR E. GUI'H.

